I'd post this in the Fantasy Bouts section, but that section is asleep.

Charles' middleweight career is less known than his dynasty at light heavyweight or his championship run at heavyweight, but he originally moved up to 175 for the same reason he later moved up to heavy: He couldn't get a shot at the middleweight crown.

15 rounds at 160. Who do you have?

Hagler by decision. We know how great and effective he was at 160 while we can only guess how good Charles was. Thinking a primed Hagler would be a bit too strong for the middleweight version of Charles who had probably not yet fully matured physically.